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F I G. 66. 



NAUTILUS Spiralis apertura lineaii geniculis elevatis. 



The fpiral nautilus, with a narrow aperture and raifed joints. 



The colour opaque white. 



From Shepey ifland — not common. 



Lin. S.N. 1162, No. 274, calcar. PI. T. i. f. 3, 4. Gualt T. 19. f. C. B. 



F I G. 67. 



NAUTILUS Spiralis geniculis Icevibus. 



The fpiral nautilus with fmooth joints. 

 The colour femipellucid, white and glofly. 

 From Sandwich and Seafalter — not common. 



F I G. 68. 



NAUTILUS Spiralis utrinque fubumbilicatas geniculis deprcflls plurimis. 



The fpiral fubumbilicated nautilus, with many deprefTed joints, 



The colour opaque white. 



From Reculver — very rare. . * 



F I G. 69. ■ 



Nautilus Spiralis umbilicatus geniculis fulcatis. 



The umbilicated fpiral nautilus, with furrowed joints. 

 The colour opaque white. 

 From Sandwich — not common. 



D 2 F I G. 70. 



